Smallpox- began Africa, spread through trade and human interaction.
Chestnut blight-isn't this a chestnut found in America?
Answer:
Carbon, Oxygen, hydrogen , Nitrogen , and phosphorus.
No it is not possible since there can be dominated or recessive alleles involved. A heterozygous for a specific gene can display the same phenotype as a homozygous for the same gene.
the answer is b) shoppers no longer need to leave the house or spend hours at the mall to make a purchase
